[Qgis-user] How to replicate ARC-GIS Natural Neighbour Interpolation Algorithm in QGIS / DTM from elevation points

[Jurijs Kondratenko]

Thanks Calvin, 

In the QGIS version I’m using, there is Nearest Neighbour algorithm. Natural Neighbour is smth else, and it seems the easiest way to have it for me is WhiteBox Tools plugin.

Best wishes, 

Jurijs

 

From: C Hamilton <adenaculture at gmail.com> 
Sent: Wednesday, September 8, 2021 5:00 PM
To: Jurijs Kondratenko <yurikondratenko at inbox.lv>
Cc: qgis-user <qgis-user at lists.osgeo.org>
Subject: Re: [Qgis-user] How to replicate ARC-GIS Natural Neighbour Interpolation Algorithm in QGIS / DTM from elevation points

 

In addition to what has already been mentioned, you can use the QGIS SAGA Toolbox. Under Raster - Rasterizing, there is a Natural Neighbour algorithm. I have not used it, but I have used the Inverse Distance Weighted algorithm for magnetometry data which in essence does something like what you are wanting to do.

 

Good luck,

Calvin

 

On Wed, Sep 8, 2021 at 4:13 AM Jurijs Kondratenko <yurikondratenko at inbox.lv <mailto:yurikondratenko at inbox.lv> > wrote:

Hi, I’m building a DTM from random points (with different distances in between) and I like ArcGIS Natural Neighbour algorithm for doing so.

Is there any way to replicate it in QGIS? https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-analyst/how-natural-neighbor-works.htm

Alternatively, what would be a way to constructing DTM from points, preserving the original points in respective pixels?

Thank you!

Jurijs Kondratenko

Riga Technical University

 

 

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